Sanding-machine.



No. 799,442. PATENTBD SEPT. 12, 1905.

H. L. BORNMAN. SANDING MACHINE.

IIIIIIIIIIIIII ED SEPT 28, 1904.

EEEEEEEEEEEEE 1.

n l m l murs/IW M, By Hmm 3am @Mgg No. 799,442. PATBNTED SEPT. l2, 1905.H. L. BORNMAN.

SANDING MACHINE.

APLIOATION FILED SEPT Z8. 1904.

6 SHEETS-SHEET 2.

J1/mento@ Henry L. Bornman @Wifi/wwwa ,QM/m.

By www www N0- 799,442, PATENTED SEPT. 12, 1905. fg. L. BORNMAN. SANDINGMACHINE.

APrLroATIoN FILED SEPT. 2s. 1904.

` 5 suns-snm a.

illl WM i Hh nimh :IHM s www JM/wwwa www Henry L. Bornman 10.799,442v lPATENTBD 'Smm 12, 1905.

` H. L. BoRNMAN.

SANDING MACHINE.

unicum! funn snPT as. 1904.

5 SHEETS-SHEET 4.

H Il IH'IH Il I HH' IHNl film' mw' HHH HMI Witwe/.sow I I SWW/Wto@25M/fw- Henry L. Bornman PATENTED SEPT. l2, 1905. H. L. BORNMAN. lSANDING MACHINE.

APPLIGATION Hmm SEPT. 2s. 1904.

6 slums-SHEET s.

@WW1/woz Henry L. Bornman UNT-TEE sTATEs PATENT oEEIcE- Specification ofLetters Patent.

Patented Sept. 12, 1905.

Application filed September 28, 1904. Serial No. 226,404.

To all whom, t may concern:

Be it known that I, HENRY L. BORNMAN, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Sanding-Machines,of which the following is a specification.

The object of my invention is to produce a machine in which cylindricalor other articles may be quickly and uniformly sanded.

The accompanying drawings illustrate my invention.

Figure 1 is a front elevation of a machine embodying my invention, theprotecting-cover being omitted. Fig. 2 is a rear elevation of saidmachine; Fig. 3, a central vertical section on line 3 3 of Fig. 1, withone-half of the protecting-cover shown. Fig. 4 is a horizontal sectionon line 4 4 of Fig. 3; Fig. 5, a vertical section on line 5 5 of Fig. 3,and Fig. 6 is a section on line 6 6 of Fig'. 1.

In the drawings, 10 indicates the main frame, which consists in part ofa vertical annular portion 11. Journaled at various points around thisannular portion are supporting-rollers 12 12, which are preferablyprovided with grooved faces, as shown in Fig.

A6, in order to receive a revoluble head 13,

which is thus freely rotatable within the annulus 11. Journaled upon thefront face of head 13 are two pairs of anged pulleys 14 14 and 15 15,respectively, two pairs of iianged idlers 14 14 and 15 15, respectively,and two tension-idlers 14 and 15, all of said wheels and idlers lying insubstantially the same plane and parallel with the front face of thehead 13. The two pairs of idlers-14 and 15 are arranged near the centerof the head, and passing' around each set of rollers and idlers is asandingbelt 14D and 15", respectively, the arrangement of the idlers 14and 15 being such that the sanding-belts will pass adjacent the centralperforation 13 of the head 13, substantially tangent thereto. The idlers14 and 15 have peripheries, which are slightly coned at their outerends, as shown at C in Figs. 3 and 4, in order that the-sanding-belts asthey pass the opening 13 may have their outer edges iared away from eachother, in order to facilitate the entrance of the article to be sanded.The rollers 14 and 15"are carried, respectively, by adjustable holders14]h and 15h, respectively, by means of which their relation to thecentral opening 13 may be varied to bring the sanding-belts into properposition, and the idlers 14 are also carried by adjustable holders totake up the slack in the sanding-belts. Journaled in suitable bearingscarried by the main frame substantially parallel with the axis of head13 is a shaft 16, which carries near its forward end a friction-roller17, adapted to engage the periphery of the head 13. Shaft 16 is carriedat its forward end in an eccentric 18, journaled in the main frame, butprovided with a suitable operating-handle 19, by means of which thefriction-wheel 17 may be thrown into or out of engagement with theperiphery of head 13. The shaft 16 in the present machine is the maindrive-shaft and is provided at oneend with a suitable tight pulley 2Oand loose pulley 20.

Journaled on the hub of head 13 on the rear side of said head is a gear21, with which mesh pinions 141 and 15p, which are carried,respectively, by the shafts of one of the pairs of pulleys 14 and one ofthe pairs of pulleys 15. Gear 21 is provided with a bevel-gear 22, whichin turn meshes with a pinion 23, carried by a shaft 24, connected bysuitable pulleys and belt 25 to a shaft 26, carrying'a gear 27, whichgear meshes with gear 28, carried by the main shaft 16. l

Mounted to the rear of the annulus 11 is a vertical guide-frame 30,carried by the main frame parallel with head 13. Vertically adjustableupon this guide-frame are two sandroller carriers 31 31, in each ofwhich is journaled a sand-roller 32, the shafts of said sandrollers eachcarrying a pulley 33, driven by a belt 34, which passes over a pulley35, carried by the shaft 26. The guide-frame 30 lies upon one side ofthe axis of head 13, and upon the opposite side is arranged ra similarguide 36, upon which are vertically adjustable two feed-roller-carryingframes 37' 37, in each of 95 which-is journaled a pair of feed-rollers38 38, the aXes of which are parallel with the axes of thesanding-rollers 32, one pair being arranged above and the other pairbelow the axis o f the head 13. The feed-rollers 38 are driven by meansof a suitable chain or belt 39, which in turn is driven by a belt 40,passing 'over the pulley 41, carried by the shaft 42, which shaft isjournaled in the main frame and provided with a gear 43, which mesheswith the gear 28. The lower feed-roller frame 37 carries a suitablereceiving-table 44, upon which the finished material will be discharged.

Inclosing the sanding-belts and parts carried by the face of head 13 isa suitable two-part IOO IIO

l cover 45, each part of which is hinged upon a vertical axis at theouter edge in order that the parts may be swung out to permit freeaccess to the sanding-belts and parts carrying the same.

In operation if a substantially cylindrical object is to be sanded,which, however, may vary in diameter at different points in its length,the operator throws lever 19 up until it brings the friction-pulley 17into engagement with the periphery of head 13, and thus causes said headto rotate in the direction indicated by the arrows. At the same timegear 21 is rotated in the direction indicated by the arrows, thusdriving the sanding-belts 14b and 15D in the directions indicated by thearrows and carrying said belts bodily around the axis of the opening 13.If, now, the article to be sanded is inserted between that portion ofthe sanding-belts which is traveling between the idlers 14l and 15', thesaid belts will yield to permit the insertion of the article and willengage every portion of said article and sand it thoroughly, the articlebeing moved in between the belts and then withdrawn toward the front.If, on the other hand, an article is to be sanded having a pair ofopposite parallel faces with connecting sides which are more or lessrounded, the head 13 is brought to a position at right angles to theposition shown in Fig. 1, so that those portions of the sandingbeltswhich lie between the two pairs of rollers 14' and 15 are substantiallyparallel with the more or less rounded sides of the article to besanded. The belts 34 and 40 are then thrown onto their pulleys, so thatthe sanding-rollers 32 and feed-rollers 38 will be rotated in thedirections indicated by the arrows. The frictionroller 17 is withdrawnfrom the periphery of head 13, so that the head 13 will remainstationary, while the sanding-belts will continue their movement becauseof the independent rotation of the gear 21 upon the head 13. The articleis then inserted with the flat faces horizontal, and as the articlepasses between the sanding-belts the more or less rounded sides aresanded thereby. The article is then caught between the forward pair offeed-rollers 38 and driven by them between the sanding-rollers 32 anddelivered to the rear feed-rollers 38 and discharged by them onto thetable 44. If very long substantially cylindrical articles are to besanded, the sanding-rollers 32 may bethrown away from the center and thebelt 34 thrown off of its pulleys, while the feedrollers 38 may then beused to draw the long article through between the sanding-belts, thehead 13 in such cases being rotated, as previously described.

I claim as my invention- 1. In a sanding-machine, the combination, witha rotatable head, and means for rotating the same at will, of an endlesssanding-belt carried by said rotatable head with its operatingfacearranged in a plane at an angle to the plane of the head, and means forindependently driving said belt.

2. In a sanding-machine, the combination, with a rotatable head, andmeans for rotating the same at will, of a pair of endless sandingbeltsmounted on said head with their operating-faces each in a plane at anangle to the plane of the head and having suitable supports whereby saidoperating-faces of the belts may be caused to travel adjacent the centerof the head in a tangential position to the axis thereof, and means fordriving said belts independent of the rotation of the head.

3. In a sanding-machine, the combination, with a rotatable head, of aplanetary sanding device carried by said head, means for rotating thehead, and means for independently rotating said sanding device.

4. In a sanding-machine, the combination, with a rotatable head, andmeans for rotating the same, of a pair of planetary sanding devicescarried by said head one upon each side of the axis thereof, and meansfor independently rotating said planetary sanding devices.

5. ln a sanding-machine, the combination, with a rotatable head, andmeans for rotating the same at will, of an endless sanding-belt carriedby said rotatable head with its operatingface arranged in a plane at anangle to the plane of the head, means for independently driving saidbelt, feeding means arranged behind said head, and a second sanding'means arranged to engage portions of the article.

6. In a sanding-machine, the combination, with a rotatable head andmeans for rotating the same at will, of a pair of endless sandingbeltsmounted on said head with their operating-faces each in a plane at anangle to the plane of the head and having suitable supports whereby saidoperating-faces of the belts may be caused to travel adjacent the centerof the head in a tangential position to the axis thereof, means forindependently driving said belts independent of the rotation of thehead, feeding means arranged behind said head, and a second sandingmeans arranged to engage portions of the article.

7. In a sanding-machine, the combination, with a rotatable head andmeans for rotating the same, of a planetary sanding device carried bysaid head, means for independently rotating said sanding device, feedingmeans arranged behind said head, and a second sanding means arranged toengage portions of the article.

8. In a sanding-machine, the combination, with a rotatable head, andmeans for rotating the same, of a pair of planetary sanding devicescar'ried by said head one upon each side of the axis thereof, means forindependently rotating said planetary sanding devices, feeding meansarranged behind said head, and a second sanding means arranged to engageportions of the article.

9. In a sanding-machine, the combination,

IOO

with a rotatable head, and means for rotating the same at will, of anendless sanding-belt carried by said rotatable head with itsoperatingface arranged in a plane at an angle to the plane of the head,means for independently driving said belt, a pair of sanding-rollersarranged behind said head one upon each side of the axis thereof, andmeans for feeding material between said pair of sanding-rollers.

10. In asanding-machine, the combination, with a rotatable head, andmeans for rotating the same at will, of a pair of endless sandingbeltsmounted on said head with their operating-faces each in a plane at anangle to the plane of the head and having suitable supports whereby saidoperating-faces of the belts may be caused lto travel adjacent thecenter of the head in a tangential position to the axis thereof, meansfor independently driving said belts independent of the rotation of thehead, a pair of sanding-rollers arranged behind said head one uponeachside of the axis thereof, and means for feeding material betweensaid pair of sanding-rollers.

11. ln a sanding-machine, the combination,

of the axis thereof, means for independently rotating said planetarysanding devices, a pair of sanding-rollers arranged behind said head oneupon each side of the axis thereof, and means for'feeding materialbetween said pair of sanding-rollers.

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 23d day of September, A. D. 1904.

HENRY L. BORNMAN. [L. s]

Witnesses:

ARTHUR M. Hoon, JAMES A. VVALsH.

